ZuoTi.Pro
Question

Choose the correct coefficients for balancing the given chemical equation. ...(NH4)2CO3 (aq) + ..AI(NO3)3 (aq) → ... NH4NO3 (
The oxidation number of Cr in Cr2O72- is... Select one: A. +3 B. -6 C.-3 D. +6
science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

3 (NH4)2CO3 + 2 Al(NO3)3 = 6 NH4NO3 + Al2(CO3)3

Answer: B)3,2,6,1

Cr2O72-

let the oxidation number of Cr be x

oxidation state of oxygen = -2

then 2x + 7*(-2) = -2

or, 2x -14 = -2

or, 2x = 14 - 2 = 12

or, x = + 6

Answer : D) +6

0 0
Add a comment
Know the answer?
Add Answer to:
Choose the correct coefficients for balancing the given chemical equation. ...(NH4)2CO3 (aq) + ..AI(NO3)3 (aq) →...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • q3 Balance the following chemical reactions (choose "1" if no coefficient is needed): a) [Select] Al2(CO3)3(s)...

    q3 Balance the following chemical reactions (choose "1" if no coefficient is needed): a) [Select] Al2(CO3)3(s) - [Select ] Al2O3(s) + (Select) + CO2(9) b) [Select] Hg2(NO3)2(aq) + (Select) NaBr(aq) – (Select] Hg Brz(s) + [Select] NaNO3(aq) c) [Select) (NH)3PO(aq) + (Select ] Pb(NO3)2(aq) - Select] 'Pb3(PO4)2(s) + [Select) NH4NO3(aq) Balance the following chemical reactions (choose "1" if no coefficient is needed): [ Select] [Select ] Al2(CO3)3(s) — (Select] cols b) [Select] "Hg2(NO3)2(aq) + (Select] NaBr(aq) – (Select] Hg2Br2(s) +...

  • Given the following balanced chemical reaction answer questions a-c below. Cr2(SO4)3 (aq) + 3 (NH4)2CO3 (aq)...

    Given the following balanced chemical reaction answer questions a-c below. Cr2(SO4)3 (aq) + 3 (NH4)2CO3 (aq) -> Cr2CO3 (s) + 3 (NH4)2 SO4 (aq) Write the overall ionic balanced chemical equation. Write the net ionic balanced chemical equation. List the spectator ion(s). Given the following balanced chemical reaction answer questions a-c below. Ca(OH)2 (aq) + 2 HClO4 (aq) -> 2 H2O (l) + Ca(ClO4)2 (aq) Write the overall ionic balanced chemical equation. Write the net ionic balanced chemical equation. List...

  • 1(i). Balance the following equations, and then write the net ionic equation (a) (NH4)2CO3(aq)   +   Cu(NO3)2(aq)...

    1(i). Balance the following equations, and then write the net ionic equation (a) (NH4)2CO3(aq)   +   Cu(NO3)2(aq) → CuCO3(s)   + NH4NO3(aq) (b) Mg(OH)2(s)   +   HCl(aq) → MgCl2(aq)   + H2O(l) (c) BaCO3(s)   +   HBr(aq) → BaBr2(aq)   +   H2O(l)   + CO2(g) (ii). For each reaction equation, identify the driving force of the reaction 2. What is an electrolyte? How can you experimentally differentiate between a weak electrolyte and a strong electrolyte? Name and give the formulas of a strong electrolyte and a weak...

  • Write the net ionic equation for the following chemical reaction. (Use the lowest possible coefficients. Do...

    Write the net ionic equation for the following chemical reaction. (Use the lowest possible coefficients. Do not include phases of matter in your answers.) a) HCIO4 (aq) + NaOH (aq) + NaClO4 (aq) + H20 (1) b) AgNO3 (aq) + KCI (aq) + AgCl (s) + KNO3 (aq) C) HNO3 (aq) + KOH (aq) → KNO3 (aq) + H20 (1) w Pb(NO3)2 (aq) + 2Nal (aq) → PbI2 (s) + 2NaNO3 (aq) AI(C2H302)3 (aq) + 3NaOH(aq) + Al(OH)3 (s) +...

  • Question 17 Write a balanced chemical equation for the oxidation of chromium metal with nitric acid....

    Question 17 Write a balanced chemical equation for the oxidation of chromium metal with nitric acid. Assume the reaction products are Cr" and NH 30H*(aq) + 3NO; - (aq) + 8Cr(s) - 3NH, (aq) + SCP-(aq) +9H 0(1) H+ (aq) + NO, (aq) + Cr(s) -- NH4+ (aq) + Cr(aq) 10H"(aq) + NO3(aq) + 3C+(3) -- NH4+(aq) + 3Cr"(aq) + 3H-01 4H" (aq) + NO; Taq) - Cr(s) - NH(aq) + Craq) 10H"(aq) + NO3- (aq) + Cr(s) - NH....

  • Watch SpongeBob. d356355 18content d rmaid ge 9495749 Question Completion Status: What are the coefficients, wr...

    Watch SpongeBob. d356355 18content d rmaid ge 9495749 Question Completion Status: What are the coefficients, wr itten from left to right, for the following chemical equation Al(C2H302aq) +Na2cO3aq) Al2(CO3)3()+NaCH3O2) A23,1,6 B. 2,3,0,6 C.2,3. 1,3 D.2,3, 3,3 QUESTION 15 Which of the following is an oxidation-reduction reaction? Ca(OH)2(aq)H2 A Cars) 2H20(aq) BaSO4() 2NaCH302(00) +Na2s04(aq) B. Ba(C2H302)2(aq) Mg(NO3)2(aq)2HO eMg(OH)2() +2HNO3(aq) CaCl2(a)HO DCao(s) 2HC(ag) Click Savve ad Submit to save and submit. Click Save All Answers to saue all answers

  • 23. Balance each chemical equation. MISSED THIS? Read Section 4.2; Watch KCV 4.2, IWE 4.2.43 a....

    23. Balance each chemical equation. MISSED THIS? Read Section 4.2; Watch KCV 4.2, IWE 4.2.43 a. CO2(g) + CaSiO3(s) + H2O(1) - SiO2(s) + Ca(HCO3)2(aq) b. Co(NO3)3(aq) + (NH4)2S(aq) → Co2S3(s) + NH4NO3(aq) C. Cu2O(s) + C(s) – Cu(s) + CO3) d. H2(g) + Cl2(8) ► HCI() och chemical equation Reaction Stoichiometry 25. Consider the unbala, hexane: Jer the unbalanced equation for the combustion of C6H14(8) + O2(g) → CO2(8) + H2O(g) Balance the equation and determine how many moles...

  • D Question 6 1 pts Given the balanced chemical equation: Ba(NO3)2(aq)+ Na2SO4(aq) BaSO4(s) + 2 NaNO3(aq)...

    D Question 6 1 pts Given the balanced chemical equation: Ba(NO3)2(aq)+ Na2SO4(aq) BaSO4(s) + 2 NaNO3(aq) ons A 0.30 L of 0.15 M Ba(NO3)2(aq) is mixed with excess Na2SO4(aq) to make 200.0 g of solution in a coffee-cup calorimeter and allowed to react completely. The temperature of the solution rises from 23.5 °C to 24.9 °C. Answer the question in each step to find ΔHrxn for this reaction. Csson-4.18 J/g °C Stirrer sources Cover Step 1: The reaction is I...

  • MISC0477: Writing and Balancing Chemical Equations 229 Problem Set 3 mplete the following table by writing...

    MISC0477: Writing and Balancing Chemical Equations 229 Problem Set 3 mplete the following table by writing the formulas of the ions, and the number of each, into which 1 mol of each of the listed ionic compounds would dissociate when dissolved in water cation anion compound formula or symbol number moles formula or symbol number of moles 1. KNO 2. NH NO3 3. BaCl2 4. Ca(CIO2 5. (NH4)2CO3 6. AlBrs 7. Alpo,

  • ple-choice questions: Choose the BEST answer and print the answer in Capital Letter in pace provided. Use ink pen o...

    ple-choice questions: Choose the BEST answer and print the answer in Capital Letter in pace provided. Use ink pen only. .. Given the unbalanced equation: 2 Al +3CuSO4 → Al2(SO4)3 + Cu. when properly balanced, the sum of the balancing coefficients is 3.7 8 . 9 2. Given the unbalanced equation: PbCl2 + Na2CrO4 + PbCrO4 +2NaCl. When properly balanced, the sum of the balancing coefficients is 4.2 3. 3 2. 4 D. 5 3. Given the unbalanced equation: Mg...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
Active Questions
ADVERTISEMENT